Microprocessor Control Board Set Up Procedures (OR PLC)

Transcription

1 Microprocessor Control Board Set Up Procedures (OR-00 PLC) SWITCHES/PUSHBUTTONS Push Buttons at display SW Enter button SW Back button SW Down SW UP Back light on/off switch Rotary switches on main board SW Peak limit -F SW V, 0V, 0V Factory default setting will be VDC, 00A unless customized at PEC. Prior to energizing the main contactor on the power supply; verify rated output settings for volts, amps, and peak limit settings on control board. OUTPUT VOLTAGE SETUP When the control board first initializes it will look for the appropriate feedback resistor on P terminals and. If the rectifier is rated other than VDC (VDC for example) it will display the following: FB Resistor Mismatch Saved.K (V) Measured 0 (V) OK (enter) Not OK (enter) * If output is between VDC and 0VDC select position on rotary switch SW for 0VDC * If output is between 0VDC and 0VDC select position on rotary switch SW for 0VDC If the measured resistor and DC value is correct select OK with appropriate push button to correctly limit the output voltage and then it will save the value and go to the main status screen. The NOT OK choice would be used if there is a wrong resistor selected for the output voltage. If the output voltage is VDC with the correct resistor the board will go to the main status screen. OUTPUT CURRENT SETUP The main status screen will display the Lset values (local) and Act values (actual). Press the enter button and press enter again to go pass warning screen. The screen will display setup and three other options. Select the setup option and then select the current option. This option will display the old value 00Amps. To select a new value use the up and down buttons for the new selection. It will go up in 0A increments until 000Amps then 00Amp increments. Press the enter button to save the new value for current.

2 AC PEAK LIMIT SETUP The Peak Limit Section monitors the AC line current of the equipment by means of current transformers connected to J/P. These current transformers are scaled to supply between /0 and / amps at rated line current. This current is rectified, summed, and compared to a reference level set on rotary switch SW.If the summed current falls below the reference level, a reset is performed. If the microprocessor is reset more than 0 times in sequence, a peak limit trip is generated, and the DC output is removed. The normal current trip points for the standard C.T. as a function of SW setting is shown in the following table (page ): After the DC voltage, current and peak limit has been set. The unit is ready to be energized. We recommend using a digital voltmeter to verify the analog voltmeter accuracy and a digital millivolt meter to verify the analog ammeter. The input voltage to the ammeter will be 0mvdc at full rated output.

3 Small CT s ( TAPS) Tap to 0 00A Large CT s ( TAPS) Tap to 00 00A A S Position 0 Binary Number 0 Tap to Up to 0A The trip action of the Peak Limit is accomplished by the microprocessor de-energizing the permit/lockout relay, which is mounted external to the board. This relay is energized by two driver stages, and is monitored by LED D. The tripped condition may only be removed by interrupting power to the board.

4 A LCD display continuously shows the operating status of the gate drive. A list of possible faults that can be display and their meanings are in the following table: FAULT / STATUS Phase A not detected MEANING A Synchronization signal missing. Phase B not detected B Synchronization signal missing. Lockout detected Lset Act ABC Peak Limit Trip Angle 0 0 Deg Phase C not detected Lockout terminal J/P, terminal shorted to common. Local set values Volts and Amps Actual Volts and Amps Input phase rotation Peak Limit Trip Activated Fault must be acknowledge to reset. Zero circuit operating, amplifier calling for lower output pulses shut off. Relative indication of degree of phase advance Roughly 0-0 Degrees Possible C Sync signal missing. Possible wrong relationship between A & B sync signals. Possibly due to no ground on Y of AC source, or lack of cabinet ground. Possible A & B sync signals both are missing. High phase angle full advanced, but control Amplifier not satisfied. ) Rectifier output does not correspond to command signal. ) A. With only Red LED s on (upper right corner) indicates a board problem. B. With all Red LED s on indicates a problem external to board such as SCR s, Diodes, DV/DT Boards, Sync Transformer, Wiring, Etc. If new rectifier installation, where maximum rated output voltage cannot be achieved, switch two AC incoming power leads at disconnect switch.

5 The Control board has () Red LED s mounted horizontally and () Red LED s mounted vertically. The () indicating V, V, V, levels are OK. Board power is good. The () Red LED s when all are red indicates Gate Pulses OK. All LED s must be on for board to work properly. Red LED s (Gate Pulses) may be off or flicker when output is low or at 0. Back light can be used to view display then switch off when finished. POWER REQUIREMENTS 0 Volts AC, center tap, 0/0 HZ. VA at terminals,, and. INPUT REQUIREMENTS TYPE RANGE DESIGNATION CONNECTOR TERM Controls 0 Vdc V ref J/P I ref J/P Current Density J/P Vf+ J/P or Vf- J/P If J/P 0 Lockout J/P 0 0 mvdc 0+ J/P 0- J/P Sync. 0 Vac A J/P B J/P GND Neutral J/P Peak Limit CT s 0 / Amp J/P - OUTPUT REQUIREMENTS TYPE RANGE DESIGNATION CONNECTOR TERM + Volt Ref. + Vdc +V J/P Relay Drive Vdc +K J/P -K J/P Current Feedback 0 ± Vdc Ifb J/P Pulse Output Vdc Pulse J J/P

6 PLC CONTROL USES J, SW-SW Rotary Switch SW Positions.) -Way allows voltage and current output to be commanded and sends two signals back one for actual voltage output and one for current output..) -Way V allows for one signal to control voltage (voltage control) and sends two signals back one for actual voltage output and one for current output..) -Way I allows for one signal to control current (current control) and sends two signals back one for actual voltage output and one for current output. Rotary Switches SW-SW SW Voltage command SW Current command SW Voltage Feedback SW Current Feedback There are options to select the desired control and feedback signals on each rotary switch.) -0mA.) 0-VDC.) 0-0VDC Input signals and output signals can be any combination that is required If board is already installed in new unit it will be factory set and calibrated per customer requirements. J CONNECTOR PINS SIGNALS Voltage command (+) Voltage command (-) Current command (+) Current command (-) Voltage Feedback (+) Voltage Feedback (-) Current Feedback (+) Current Feedback (-) Digital Ground 0 Local/Remote

7 Local/Remote selector When pin 0 on J is grounded with pin (digital grounded) it will allow the board to be controlled remotely with the above selections. If pin 0 is ungrounded it will allow local control only (potentiometers) to operate the unit. If it is required to select between remote or local for a specific operation, the potentiometers or the PLC signals do not need to be disconnected. Calibration PLC calibration is done after the initial LOCAL setup is completed. This will require the appropriate signal interjected into the board based PLC signal selection. When the board is in REMOTE mode and needs to be calibrated for the first time. The display will prompt to set command voltage (J pins and ) at % (ex. ma) press enter and it will prompt to set command at % (ex. ma). After this, it will ask for a % signal for current command to set (press enter) and then it will ask for % command to be set (press enter). After this calibration is complete. There is no calibration for feedback signals only command. The command calibration is based on your selections with switches through.

8 0 0 P P J J Microprocessor Control Board (OR000) Digital Display Microprocessor SW Peak Limit -F Setting SW-SW :-0mA :0-Vdc :0-0Vdc SW Vcmd CONTROL :WAY :WAY V :WAY I SW SW Icmd SW Vfb 0 SW Ifb SW Voltage Range 0-V, -0V, -0V J Notes:. If output is VDC then add jumper wire between pin to on P With wire # going to P-. If output is,,, or VDC then wire # goes to P- and Resistor (R) goes from P- to P-. J J P 0 P 0 A- A+ JUMPER See Note 0 See Note See Note 0